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States / Ohio

Washington County, OH

The federal environmental record for Washington County (population 58,577): what is on file, where it is, and what remains open. Sources and retrieval dates are on the methodology page.

1

Superfund NPL sites

9

federal cleanup sites

5

PFAS-detecting water systems

14

TRI facilities

11

open tank releases

Superfund NPL sites

SiteCityStatusListed
Van Dale JunkyardMariettaon the NPL06/10/1986

Drinking water: PFAS testing

Public water systems serving Washington with at least one PFAS detection under UCMR5. The federal limit for PFOA and PFOS is 4 ng/L; EPA proposed in May 2026 to rescind the limits for the other compounds, which are shown for information.

SystemHighest resultsReading
MARIETTA CITY PWS

OH8400412

PFOS: 5.6 ng/L

PFOA: 5.2 ng/L

PFBS: 4.7 ng/L

above final limit
PUTNAM COMMUNITY WATER ASSOCIATION PWS

OH8400712

PFOA: 16.9 ng/L

PFHxS: 3.5 ng/L

above final limit
WARREN COMM W AND S ASSN 2

OH8402703

PFOA: 20 ng/L

PFBS: 6.3 ng/L

above final limit
BELPRE CITY PWS

OH8400012

PFBA: 21 ng/L

PFPeA: 16 ng/L

detected
WATERFORD WATER/SEWER ASSOCIATION

OH8401112

PFBS: 6.1 ng/L

detected

On a system with detections? Testing and treatment options

Facilities reporting toxic releases (2024)

14 facilities in Washington filed TRI reports for 2024, totalling 3.6M lb released.

FacilityCityTop chemicalsTotal released
KRATON CORPBELPRENitrate compounds (water dissociable; reportable only when in aqueous solution), Cyclohexane1.6M lb
ENERGIZER HOLDINGS INCMARIETTAManganese And Manganese Compounds, Lead And Lead Compounds812k lb
ERAMET MARIETTA INCMARIETTAManganese, Nickel396k lb
FERROGLOBE USA METALLURGICAL INCWATERFORDSulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size), Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size)334k lb
SOLVAY SPECIALTY POLYMERS USA LLCMARIETTAChlorobenzene, 4,4'-Isopropylidenediphenol279k lb
PROFUSION INDUSTRIES LLCMARIETTADiisononyl Phthalates (DINP), Antimony And Antimony Compounds88k lb
AMERICAS STYRENICS LLC - MARIETTAMARIETTAStyrene, Toluene18k lb
ORION ENGINEERED CARBONS BELPREBELPRECarbon disulfide, Hydrogen sulfide9k lb
VANGUARD PAINTS & FINISHES INCMARIETTACertain glycol ethers, Xylene (mixed isomers)2k lb
MPLX TERMINALS LLC - MARIETTA OH TERMINALMARIETTAn-Hexane, Toluene2k lb
SKYLINE STEEL LLC-BELPREBELPREPolycyclic aromatic compounds, Manganese827 lb
MARIETTA INDUSTRIAL ENTERPRISE S INC.MARIETTAMercury compounds, Manganese compounds97 lb
THERMO FISHER SCIENTIFIC (ASHEVILLE) LLCMARIETTANickel, Chromium10 lb
WESTLAKE DIMEXMARIETTA-0 lb

Underground fuel tanks

EPA's UST Finder records 219 tank facilities in Washington: 157 tanks in service and 444 closed. 268 fuel releases are on record, of which 11 remain open. Open releases are cleanups that have not reached "no further action".

Radon

EPA maps Washington as Zone 2, moderate predicted indoor radon (2 to 4 pCi/L average). Radon and air quality are covered in depth on lung.com.

The record for one specific address

County figures blur what matters: distance. The Address Environmental Report runs these same federal datasets against one address and reports every site, tank, polluter and water result around it, with distances, in about a minute.

Get the report - $39

All federal cleanup sites on file

The wider Superfund enterprise inventory (SEMS) for Washington, including sites assessed but never listed. Presence here records that EPA had reason to look, not a finding of danger.

  • BELPRE ER-KRATON POLYMERSBELPRE
  • BEVERLY WELLFIELDBEVERLY
  • MARIETTA INDUSTRIAL ENTERPRISESMARIETTA
  • MARIETTA WELL FIELD/UNKNOWN SOURCEMARIETTA
  • MGM DISPOSAL COMPANY LANDFILL IIWATERFORD
  • SHELL CHEMICAL COMPANY MARIETTA PLANTBELPRE
  • UNION CARBIDE CORPORATION SITE B LANDFILLMARIETTA
  • VAN DALE JUNKYARDMARIETTA
  • WASHINGTON WORKS INVESTIGATIONLITTLE HOCKING